Danfoss Valve Removal

[BxlBill]

Hello,

I've searched the internet to find out how to remove my Danfoss radiator valve to no avail (I want to check the pin since the radiator is cold and it didn't need bleeding). All the advice I've found doesn't seem to work with this valve, yet it can't be so rare.

I haven't been able to get it to budge by either turning or pulling. I don't want to use so much force that I cause havoc.

Link to photo below (can't seem to embed it). Is the trick with the black ring between the metal ring to the left and the white valve itself? Does it need to be unscrewed? Yanked? Or... ?

Many thanks to all with advice.
Photo: https://www.flickr.com/photos/wunderschoen/16036569652

 

[ALCPlumbing]

I may be wrong but I think those ones are spring loaded. Just below the white body if it was vertical anyway. On your picture it's just to left of the white body I think there is a plastic clip that you rotate to release the valve head. It should just pop off.

 

[BxlBill]

Thanks ALCPlumbing. The tricky part is actually getting access to that plastic ring as it's too narrow to get my fingers or a tool into. Perhaps I need a visit to the hardware store. I will persevere.

A bit of googling has led me to these info sheets. I think I have the RAE 5054 (I bought this flat last summer where they were already fitted) but I'm none the wiser for getting the valves off!

http://bit.ly/1IYF3Mf

http://bit.ly/139C8PS

 

[ALCPlumbing]

Yeah they are the ones I was thinking off. You just rotate the black ring as far as it will go and whilst in that position you should be able to pull the head away from the body of the valve. They're at lot easier if fitted vertically as you only have pipe below it as opposed to the radiator. Can you use pliers or something to that effect.

 

[BxlBill]

Thanks for the tip.

Unfortunately, I must have the most peculiar radiator valves going. I bought a pair of pliers today which are narrow enough to reach the black ring. Even so, it is impossible to rotate it. Either it's not meant to rotate or it's stuck. Argh. I have not given up yet, but do not know what I will do next. Frustrating. All the other radiators in the flat are nice and hot.

 

[denso13]

Some have an "anti theft plug" to stop the head being removed http://heating.danfoss.com/PCMPDF/RAE_VDTTM402.pdf

 

[BxlBill]

Finally solved this, btw. Turns out this model actually required a wrench. I simply turned the large bolt near the radiator and it then came off very easily. Problem wasn't the pin in the end but I got the radiator working nevertheless by adjusting one of the other valves.

Just wanted to close the story in case anyone else ever digs up this thread!